A how to for a PC XO.

[Sheldon]

Thanks,

Sheldon

[kfr01]

I saw the identification of a seemingly show-stopping problem with the Waves XO a few pages of posts back.

I may have missed something, but was a work-around or fix also identified?

Thanks!

Karl

[ShinOBIWAN]

Originally posted by kfr01
I saw the identification of a seemingly show-stopping problem with the Waves XO a few pages of posts back.

I may have missed something, but was a work-around or fix also identified?

Thanks!

Karl

One of the downsides to FIR filters is ringing, what this means is that the roll-off eventually slows and the FIR filter begins to oscillate through the passband.

The workaround was to use higher roll off rates and also use the Low Ripple method for the FIR filters. This give you -100dB rejection in the passband. Accurate is around -60dB and Normal is -80dB.

Every FIR filter exibits this problem as much in the same way the an IIR filter distorts phase but its definitely inaudible when your talking about the low ripple method and steepish slopes.

Interestingly, Algoritmix's Orange PEQ is a linear phase filter but doesn't exhibit the ringing artifact because it works in the time domain. Downsides of its use are big latency and lack of very steep slopes, infact 4th order is the max rolloff you can use with this one.

For me the Waves package works best so far and I really wouldn't worry about the 'artifact' I discussed a few pages back when I was a little less wise. Its a non issue.

[kfr01]

Shin:

Thank you for the wonderfully informative posts and your quick response to my question.

[ShinOBIWAN]

Originally posted by kfr01
Shin:

Thank you for the wonderfully informative posts and your quick response to my question.

The only reason for my reply was out of fear.

I thought that could be a picture of you as your avatar

[jgwinner]

Still trying to pick a card - I have a couple of X-Fi cards in the house now but still looking at audiophile cards.

The SB X-Fi card isn't bad though, does anyone know if two of them can be clocked together?

The Delta 1010Lt card looks good, and the later posts mention the ESI card - an ESI WaveTerminal 192M (4 in 8 Out) looks good too - if I can get 2 of them in a single machine. I haven't seen if these take external clocks though.

[ogp]

From what I remember reading in this and earlier threads, I thought the M-Audio cards weren't good candidates because you couldn't use them with the software properly or something.....

[Zodiac]

Shinobiwan

Would the lite version of waves (IR1-L) be usable as a DRC software engine or would it be better paying more for the full IR1 functionality?

[ShinOBIWAN]

Originally posted by Zodiac
Shinobiwan

Would the lite version of waves (IR1-L) be usable as a DRC software engine or would it be better paying more for the full IR1 functionality?

I prefer the IR1-L as not only is the interface cleaner (the extra features of IR-1 simply aren't used) it also seems slightly quicker when like for like features are enabled.

At first I thought this was due to the internal precision being lesser on the L version but reading through the waves manual actually pointed out that the two operate on exactly the same engine.

I personally prefer Voxengo Prisine Space but IR1 is fine also.

[Zodiac]

Ah yes, Voxengo - trouble is I'm using a Mac and OSX so not an option. Looks like i'll investigate IR-L!

Thanks